1.             Introduction

Project Background

1.1          The Shatin to Central Link (SCL) is one of the priority railways recommended for implementation in the Railway Development Strategy 2000. It is also one of the ten large-scale infrastructure projects announced by the Chief Executive in his 2007-2008 Policy Address. The Executive Council has endorsed on 11 March 2008 the SCL scheme jointly developed by the MTR Corporation Limited (MTR) and the HKSAR government to proceed with further planning and design for this line.   

1.2          The SCL alignment comprises 17 kilometres of rail line that will connect several existing railway lines, creating two distinct east-west and north-south railway corridors (Appendix 1.1). It will also provide interchange opportunities at six of its ten stations (Tai Wai, Diamond Hill, Homantin, Hung Hom, Exhibition and Admiralty). From east to west, the SCL will connect the existing Ma On Shan Line with the West Rail Line. The north-south corridor will be formed by extending the existing East Rail Line to Hung Hom Station (HUH) and then across Victoria Harbour to the planned Exhibition Station (EXH) and Admiralty Station (ADM). At ADM, interchanges will be provided with the existing Island Line, Tsuen Wan Line and the South Island Line (East) (SIL(E)).

1.3          The SCL is strategically important for connecting the existing railway lines into an integrated rail network. The east-west connection will allow the creation of a 57km east-west corridor across the city connecting Wu Kai Sha with Tuen Mun via Kowloon. The north-south connection will operate over a 41km north-south corridor with services originating in Lok Ma Chau or Lo Wo travelling via the existing East Rail Line to ADM. This will facilitate a direct link between Mainland China and Hong Kong Island. Figure No. NEX2213/C/331/ENS/M50/001 illustrates an overview of the SCL alignment.

1.4          For the purposes of Environmental Impact Assessment (EIA), five EIA studies have been conducted to cover different sections of the SCL, which include:

·               SCL – Hung Hom to Admiralty Section [SCL (HUH-ADM)] (hereinafter referred to as “the Project”, being considered in this EIA) – the section from North Ventilation Building, Plant Rooms and Emergency Access (NOV) in Hung Hom across the harbour to the Causeway Bay Typhoon Shelter (CBTS), Exhibition Station (EXH) and then to ADM;

·               SCL – Mong Kok East to Hung Hom Section [SCL (MKK-HUH)] – the realignment work for the existing East Rail Line tracks from the tunnel portal near Oi Man Estate (Portal 1A) to the proposed NOV in Hung Hom;

·               SCL Protection works at Causeway Bay Typhoon Shelter – the section of approximately 160m long of the SCL tunnel protection works at the crossing over Central-Wan Chai Bypass (CWB) tunnels, which would be constructed under the CWB project;

·               SCL – Tai Wai to Hung Hom Section [SCL (TAW-HUH)] – the extension of Ma On Shan Line from Tai Wai Station via Hing Keng, Diamond Hill, Kai Tak, To Kwa Wan, Ma Tau Wai and Ho Man Tin to Hung Hom, and link up with the existing West Rail Line, along with a proposed stabling sidings option in Diamond Hill (DHS)1; and

·               SCL – Stabling Sidings at Hung Hom Freight Yard [SCL (HHS)] – a proposed stabling sidings option for SCL (TAW – HUH) at the former freight yard in Hung Hom[1].

Designated Projects under the EIA Ordinance

1.5          The Project covers the following designated project (DP) elements as specified under Items A.2, A.7, C.2 and C.12 in Schedule 2 Part 1 of the Environmental Impact Assessment Ordinance (EIAO) (Cap. 499):

Ÿ    DP1 - A railway and its associated stations (EXH and ADM) under A.2 in Schedule 2 Part 1;

Ÿ    DP2 - A railway tunnel more than 800m in length between portals under A.7 in Schedule 2 Part 1;

Ÿ    DP3 - Reclamation works (including associated dredging works) of more than 1 ha in size with a boundary of which is less than 100m from a seawater intake point under C.2 (b) and resulting in 5% decrease in cross sectional area calculated on the basis of 0.0mPD in a sea channel under C.3 (a) in Schedule 2 Part 1; and

Ÿ    DP4 - A dredging operation exceeding 500,000 m3 or a dredging operation which is less than 100m from a seawater intake point under C.12 in Schedule 2 Part 1.

1.6          Figure Nos. NEX2213/C/331/ENS/M50/002 to NEX2213/C/331/ENS/M50/003 show the locations of the aforementioned DPs.

1.7          An application for an EIA Study Brief was made to the Environmental Protection Department (EPD) and the EIA Study Brief No. ESB-193/2008 for the Project has been issued under the EIAO.  AECOM Asia (HK) Company Limited (AECOM) was commissioned by MTR as the Consultant to conduct this EIA study for the Project.

1.8          Subsequent to the issue of the EIA Study Brief, the Project title has been changed from “Shatin to Central Link – Cross Habour Section (Phase II –Hung Hom to Admiralty)” to “Shatin to Central Link – Hung Hom to Admiralty Section” [SCL (HUH-ADM)] so as to align with the latest gazettal. The demarcation of the Project has also been slightly modified by shifting to the south of HUH. Nevertheless, the scope of issues covered under the EIA Study Brief is adequate to cover these changes. 

1.9          The EIA studies for SCL (TAW-HUH), SCL (HHS), SCL (MKK-HUH) and SCL Protection Works at CBTS have been conducted separately under the EIA Study Brief Nos. ESB-191/2008, ESB-233/2011, ESB-192/2008 and ESB-213/2010 respectively.

Objectives of the EIA Study

1.10        The purpose of the EIA Study is to provide information on the nature and extent of environmental impacts arising from the construction and operation of the Project including cumulative impacts with concurrent projects and associated mitigation measures for protecting the environment. The information obtained in the EIA Study will contribute to decisions on:

Ÿ   the conditions and requirements for the detailed design, construction and operation of the Project to mitigate adverse environmental consequences where practicable; and

Ÿ   the overall acceptability of any adverse environmental consequences that are likely to arise as a result of the Project;

Ÿ   the acceptability of residual impacts after the proposed mitigation measures are implemented.

1.11        The EIA study has been conducted and completed in accordance with the requirements of the EIA Study Brief (ESB-193/2008) under the EIAO and the guidelines on assessment methodologies provided in Annexes 12 to 19 of the Technical Memorandum on Environmental Impact Assessment Process (EIAO-TM).  The EIA Report has been prepared to address the requirements of the EIA Study Brief, which are outlined below:

Ÿ   to describe the Project, associated works, and option(s) of alignment together with the requirements and environmental benefits for carrying out the Project;

Ÿ   to identify any individual designated project element(s) under Schedule 2 of the EIAO to be covered in the Project and to ascertain whether the findings of the EIA study have adequately addressed the environmental impacts of this project;

Ÿ   to identify and describe the elements of the community and environment likely to be affected by the Project and/or likely to cause adverse impacts to the construction or operation of the Project, including both the natural and man-made environment and the associated environmental constraints;

Ÿ   to present the consideration of alternative(s) with regards to avoiding and minimising the potential environmental impacts on sensitive receivers; to compare the environmental benefits and drawbacks of the option(s) (including Project alignment, train system, location(s) and size(s) of station/ platforms, ventilation building(s), vent shaft(s), entrances and exits, locations and size of works areas/works sites, overnight explosive storage facility (if any) and construction method(s)); to provide reasons for selecting the preferred option(s) and to describe the part that environmental factors played in the selection;

Ÿ   to identify and assess water quality impacts, waste management implications, potential land contamination issue, landscape and visual impacts, noise impacts, air quality impacts, ecological and fisheries impacts, potential hazards to life, potential cultural heritage impacts, and determine the significance of impacts on sensitive receivers and potential affected uses;

Ÿ   to propose provision of mitigation measures so as to minimise pollution, environmental disturbance and nuisance during construction and operation of the Project;

Ÿ   to investigate the feasibility, practicability, effectiveness and implications of the proposed avoidance or mitigation measures;

Ÿ   to identify, predict and evaluate the residual environmental impacts (i.e. after practicable mitigation) and the cumulative effects expected to arise during the construction and operational phases in relation to the sensitive receivers and potential affected uses;

Ÿ   to identify, assess and specify methods, measures and standards, to be included in the detailed design, construction and operational stages of the Project which are necessary to avoid or mitigate these environmental impacts and cumulative effects and reduce them to acceptable levels;

Ÿ   to investigate the extent of the secondary environmental impacts that may arise from the proposed mitigation measures and to identify constraints associated with the mitigation measures recommended in the EIA study, as well as the provision of any necessary modification; and

Ÿ   to establish and specify the environmental monitoring and audit requirements to ensure the effective implementation of the recommended environmental protection and pollution control measures.

EIA Assessment Area

1.12        The assessment area for the EIA study, as specified in the EIA Study Brief, includes: 

Ÿ   Cultural heritage impact assessment – areas within 300m from either side along the full length of the Project alignment and from any works sites, including works sites away from the Project alignment, proposed under the Project.

Ÿ   Ecological impact assessment –The assessment area for marine ecological impact assessment shall be the same as that for the water quality impact assessment and include any areas likely to be impacted by the Project.

Ÿ   Fisheries impact assessment – The assessment area shall be the same as the water quality assessment and include any areas likely to be impacted by the Project.

Ÿ   Landscape and visual impact assessment – areas within a 100m distance from the Project alignment and from all work sites for landscape impact assessment. The assessment area for visual impact assessment shall be defined by the visual envelope of the Project.

Ÿ   Construction dust impact assessment – areas within a distance of 500m from the Project alignment and from any works sites, including works sites away from the Project alignment, proposed under the Project.

Ÿ   Noise impact assessment – areas within a distance of 300 m from the Project alignment and from any works sites, including works sites away from the Project alignment, proposed under the Project. Subject to EPD agreement, the assessment area could be reduced accordingly if the first layer of noise sensitive receivers, closer than 300m from the outer Project limit, provides acoustic shielding to those receivers located further away.

Ÿ   Water quality impact assessment – the Victoria Harbour Water Control Zone (WCZ), the Eastern Buffer WCZ and the Western Buffer WCZ, any areas within a distance of 300m from the Project boundary and from any works sites.  

Ÿ   Land contamination assessment – potential land contamination sites within the Project area including any on-site and off-site works areas and any other potential contaminated site(s) identified in this EIA study.

Ÿ   Waste management implications – areas within the boundary of the Project site.

Report Structure

1.13        This EIA Report comprises eighteen chapters, as outlined below:

Ÿ    Chapter 1 presents the background of the project and introduction of this EIA Study.

Ÿ    Chapter 2 discusses the consideration of alternatives.

Ÿ    Chapter 3 outlines the project description and construction methodology proposed for the Project.

Ÿ    Chapter 4 identifies and assesses potential cultural heritage issues.

Ÿ    Chapter 5 identifies and assesses potential ecological impacts.

Ÿ    Chapter 6 identifies potential fisheries impacts.

Ÿ    Chapter 7 identifies and assesses potential landscape and visual impacts arising from the construction and operation of the Project.

Ÿ    Chapter 8 assesses potential dust impacts arising from the construction of the Project.

Ÿ    Chapter 9 identifies and assesses potential airborne noise impacts arising from the construction and operational phases.

Ÿ    Chapter 10 identifies and assesses potential ground-borne noise impacts arising from the construction and operational phases.

Ÿ    Chapter 11 reviews potential water quality impacts arising from the construction and operational phases.

Ÿ    Chapter 12 identifies issues in relation to waste management.

Ÿ    Chapter 13 identifies issues in relation to potential land contamination.

Ÿ    Chapter 14 identifies the hazard to life issues.

Ÿ    Chapter 15 highlights the Environmental Monitoring and Audit (EM&A) requirements.

Ÿ    Chapter 16 presents the summary of environmental outcome.

Ÿ    Chapter 17 presents the implementation schedule.

Ÿ    Chapter 18 presents the overall conclusions.


 



[1] The ultimate suitability of using either the DHS or HHS or a combination of both sites for train stabling would be subject to the findings of detailed engineering and EIA studies.